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random-access memory (RAM)
All software, including applications and the operating system, must be loaded into RAM - a an electronic working space,
consisting of a set of chips that can be accessed, at high-speed by the microprocessor. The contents of RAM are erased
when the computer is turned off. RAM is measured in megabytes.
raster image
Synonym for bitmap image
read-only memory (ROM)
A memory space containing instructions which can be read by a computer but is unchangeable. Sometimes parts of the
operating system or modem settings are stored in ROM. Also some software is stores on removable ROM devices such as
CD ROM
refresh rate
The frequency with which each line on a computer screen is. Measured in hertz - cycles per second. The higher the refresh
rate, the less the screen appears to flicker
Remote Imaging Protocol (RIP)
A type of terminal emulation using graphical elements stored on the caller's computer to rapidly draw colour screens. Also
permits mice to be used.
Request for Comments (RFC)
A collection of documents used on the Internet to record descriptions of evolving protocols and standards. These are handy
sources of information regarding how the Internet works.
resolution
The resolution of a monitor refers to the horizontal and vertical number of pixels that make up the display on a screen.
Similarly, the resolution of a printer is measured in dots per logical inch (dpi).